激活Paint对象的颜色 [英] Animate color of Paint object

问题描述

我正在尝试在自定义视图中为颜色之间的Paint对象设置动画.但是动画不起作用.

I am trying to animate a Paint object in my custom view between colors. But the animation is not working.

ObjectAnimator colorFade = ObjectAnimator.ofObject(mCirclePaint, "color", new ArgbEvaluator(), getColor(), 0xff000000);
              colorFade.setDuration(1500);
              colorFade.start();

            invalidate();

我以前是这样设置油漆颜色的:

I have previously set the paints color like this:

mCirclePaint.setColor(Color.RED);

更新我认为Handler对于是否动画没有影响.即使没有处理程序，我也无法为绘画对象设置动画.

UPDATE I don't think the Handler makes a difference to whether it animated or not. Even without the Handler I cannot animate the paint object.

推荐答案

这是我找到的解决方案:

This is the solution I found:

ObjectAnimator    colorFade = ObjectAnimator.ofObject(mCirclePaint, "color", new ArgbEvaluator(), getColor(), mColors[randomNum]);
                  colorFade.setDuration(1500);
                colorFade.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {

                    @Override
                    public void onAnimationUpdate(ValueAnimator animation) {
                        // TODO Auto-generated method stub
                        invalidate();

                    }


                });

                  colorFade.start();

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